Pentium mmx overdrive 180mhz 60/180 p55c
PODPMT60X180

Good list here

https://www.cpu-world.com/CPUs/Pentium/Intel- … DPMT60X180.html

Pentium 60 and 66 are all socket 4. First socket 5 cpus were 75 and 90.

PS. Never seen any info on a Pentium 50, if it existed, then only some internal Socket 4 engineering sample that nobody has in the wild.

Cyberdyne wrote on 2021-01-28, 07:26:

Pentium 60 and 66 are all socket 4. First socket 5 cpus were 75 and 90.

PS. Never seen any info on a Pentium 50, if it existed, then only some internal Socket 4 engineering sample that nobody has in the wild.

I'll have to check. I swear my friend has a socket 7 60 I'll remove the 50

Sphere478 wrote on 2021-01-28, 09:18:

Cyberdyne wrote on 2021-01-28, 07:26:

Pentium 60 and 66 are all socket 4. First socket 5 cpus were 75 and 90.

PS. Never seen any info on a Pentium 50, if it existed, then only some internal Socket 4 engineering sample that nobody has in the wild.

I'll have to check. I swear my friend has a socket 7 60 I'll remove the 50

Nope. What he might have is some other Pentium at a non-standard bus clock.

If you take a Pentium 75/90/100 (with 1.5x multiploer) and run it at 40MHz FSB (which was quite common on really early So5 boards), it runs at 60MHz. Doesn't make it a Pentium 60 though 😉

dionb wrote on 2021-01-28, 11:11:

Sphere478 wrote on 2021-01-28, 09:18:

Cyberdyne wrote on 2021-01-28, 07:26:

Pentium 60 and 66 are all socket 4. First socket 5 cpus were 75 and 90.

PS. Never seen any info on a Pentium 50, if it existed, then only some internal Socket 4 engineering sample that nobody has in the wild.

I'll have to check. I swear my friend has a socket 7 60 I'll remove the 50

Nope. What he might have is some other Pentium at a non-standard bus clock.

If you take a Pentium 75/90/100 (with 1.5x multiploer) and run it at 40MHz FSB (which was quite common on really early So5 boards), it runs at 60MHz. Doesn't make it a Pentium 60 though 😉

I must have remembered wrong 😀 removed from list 😀

Cyberdyne wrote on 2021-01-28, 07:26:

PS. Never seen any info on a Pentium 50, if it existed, then only some internal Socket 4 engineering sample that nobody has in the wild.

A80500-50 Q0399 engineering sample only

rmay635703 wrote on 2021-01-28, 17:41:

Cyberdyne wrote on 2021-01-28, 07:26:

PS. Never seen any info on a Pentium 50, if it existed, then only some internal Socket 4 engineering sample that nobody has in the wild.

A80500-50 Q0399 engineering sample only

How should it appear on list?

There are 400Mhz 450Mhz and 500Mhz version of K6-III+
There is no 550Mhz version. That is just overclocking if you run one at 550Mhz

Baoran wrote on 2021-01-28, 18:51:

There are 400Mhz 450Mhz and 500Mhz version of K6-III+
There is no 550Mhz version. That is just overclocking if you run one at 550Mhz

Lol. I own one. Yes there is haha

Adding those

When is it a destinctive model? The Pentium 120 was available both with P54C (0.6u) and P54CQS core (0.35u) are they different models in your definition? As per my collection, they are 😀

And then, there's a million different Cyrix CPU's as well.

You might want to use feiopa's thread as a starting point: The Ultimate 686 Benchmark Comparison

H3nrik V! wrote on 2021-01-29, 07:43:

When is it a destinctive model? The Pentium 120 was available both with P54C (0.6u) and P54CQS core (0.35u) are they different models in your definition? As per my collection, they are 😀

And then, there's a million different Cyrix CPU's as well.

You might want to use feiopa's thread as a starting point: The Ultimate 686 Benchmark Comparison

can you edit OP in a quote and I will coppy and paste it to update? 😀

Sphere478 wrote on 2021-01-28, 18:59:

Baoran wrote on 2021-01-28, 18:51:

There are 400Mhz 450Mhz and 500Mhz version of K6-III+
There is no 550Mhz version. That is just overclocking if you run one at 550Mhz

Lol. I own one. Yes there is haha

Adding those

Yep, I own two of them, running 100% stable @ 600 MHz

majestyk wrote on 2021-01-29, 08:19:

Sphere478 wrote on 2021-01-28, 18:59:

Baoran wrote on 2021-01-28, 18:51:

There are 400Mhz 450Mhz and 500Mhz version of K6-III+
There is no 550Mhz version. That is just overclocking if you run one at 550Mhz

Lol. I own one. Yes there is haha

Adding those

Yep, I own two of them, running 100% stable @ 600 MHz

send them to me so I can" test" them in my Tyan Tomcat IV 😁 🤣

ps for those wondering: Dual AMD K6 computer
it most likely would not work in mine, but in a proprietary older board with upgrade adapters it just may.

majestyk wrote on 2021-01-29, 08:19:

Sphere478 wrote on 2021-01-28, 18:59:

Baoran wrote on 2021-01-28, 18:51:

There are 400Mhz 450Mhz and 500Mhz version of K6-III+
There is no 550Mhz version. That is just overclocking if you run one at 550Mhz

Lol. I own one. Yes there is haha

Adding those

Yep, I own two of them, running 100% stable @ 600 MHz

My 450Mhz one runs fine at 600Mhz too, but we are looking at official specs here because otherwise they could probably be considered to be the same cpu no matter what the official mhz rating is.

Baoran wrote on 2021-01-29, 18:22:

My 450Mhz one runs fine at 600Mhz too, but we are looking at official specs here because otherwise they could probably be considered to be the same cpu no matter what the official mhz rating is.

I´m quite sure all the chips came from the same production, the same wafers. They got tested for stability, graded and placed in groups afterwards. So at the end there were 450, 500, 550 MHz K6+ ready to be sold at different prices.
That´s what the economist calls "price discrimination".

A copy sold as 550 was in the most stable group, but a 450 would be as exactly as stable when overvolted 0,05V or 0,1V.

Baoran wrote on 2021-01-29, 18:22:

majestyk wrote on 2021-01-29, 08:19:

Sphere478 wrote on 2021-01-28, 18:59:

Lol. I own one. Yes there is haha

Adding those

Yep, I own two of them, running 100% stable @ 600 MHz

My 450Mhz one runs fine at 600Mhz too, but we are looking at official specs here because otherwise they could probably be considered to be the same cpu no matter what the official mhz rating is.

The k6+ cpus basically all report stability at or above 600 it’s like they all came from the same batch which makes sense as they weren’t produced long. The only real difference between them is the cache size the 2+ has 128k and the 3+ has 256k even the low voltage variants act the same, you can run them higher or the higher ones lower. My 550 3+ is running at 450 1.5v

If you are only interested in the CPU fitting, then all of the Cyrix MediaGX, GXm, and GX1 series. Better not power it on though!!!

You are missing the socket 5 non-mmx overdrive cpu's (125, 150, 166) models.
missing the standard Pentium 150 (non-mmx) too.

All the AMD K5 models - https://en.wikipedia.org/wiki/List_of_AMD_K5_microprocessors

feipoa wrote on 2021-01-31, 00:28:

If you are only interested in the CPU fitting, then all of the Cyrix MediaGX, GXm, and GX1 series. Better not power it on though!!!

Yeah, basically if it fits it lists. Lol most if not all can be made to “work” with interposers or undocumented settings.